The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Discover 25 incredible facts about the human body that will blow your mind! From neurogenesis to daily height changes, ...

When a human dies, the body doesn't simply switch off all at once. Different organs stop working at different times, depending on how much oxygen they need and how reliant they are on blood flow.

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Scientists may have discovered another way the human body tries to protect itself from cancer. New research on mice suggests ...

Imagine a heart patient with a pacemaker—one of the millions who rely on these tiny, implanted devices to keep their hearts beating steadily. While pacemakers save lives every day, their ability to ...